Amazon customers love the e-commerce site for the convenience of having household goods to electronics delivered, and after its proposed acquisition of Whole Foods Markets, it may soon dominate the grocery industry too.

Prior to the $13.7 billion acquisition last Friday, Amazon already sold groceries on its website through its platforms AmazonFresh and Prime Pantry. But even with those options, is it cheaper than Whole Foods?

We compared basic grocery items on Amazon (including Prime Pantry), AmazonFresh and Whole Foods to determine which company produced the least expensive bill. The results were interesting.

Amazon's takeover of Whole Foods is easily one of the hottest topics this week. The $13.7 billion sale So what's in store? Technology will be a huge factor going forward, leading Whole Foods CEO John Mackey to say "we’re gonna get a lot of those innovations in our stores." One possible example is faster checkout lines. Online ordering should pick up, according to the Food Marketing Institute and Nielsen, with 20%-25% of grocery sales expected to come via the web by 2025. A more consumer-oriented approach is on its way. Besides lower prices, Whole Foods brings it's vibrant stores, filled with beer and wine bars, to the table. With Amazon's tech and customer service, the in-store experience should only improve. Amazon's ability to personalize offers and give loyalty discounts serves to enhance the in-store customer experience. Customers’ mobile phones would enable monitoring of in-store movements as well as store check-in and checkout. Mackey expects Whole Foods to adopt the Amazon mantra focused on long-term growth and a better customer experience rather than concerns for short-term profits that please investors.

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Amazon offered the best deals to consumers — so long as they shop on AmazonFresh.

If you were to purchase every item in the slideshow above, AmazonFresh is the cheapest option yielding a $107.37 check, followed by Whole Foods at $128.40, and Amazon coming in last at $171.01.

Prices noted do not include Prime memberships, which cost $99 annually.

AmazonFresh is a food delivery and pickup option available in specific cities and exclusive to Prime members, while Prime pantry lets Prime members shop for groceries with a waved shipping fee.

Interestingly, items purchased on AmazonFresh and Amazon varied in cost. It should be noted that AmazonFresh also charges an additional monthly membership fee of $14.99.

It's too early to tell exactly how Amazon's takeover of Whole Foods will affect the stores, but once the deal is completed, the delivery giant will gain about 460 stores in the US, Canada and UK, Chronicle columnist Thomas Leewrites.

Take a look at the slideshow above to see how Amazon and Whole Foods items compare.